---
kind: "section"
citation: "46 C.F.R. § 108.241"
title: "46"
number: "108.241"
heading: "Visual aids."
url: "https://uscodex.org/cfr/46/108.241"
---

# §108.241. Visual aids.

- (a) **Each helicopter deck must—**
  - (1) Have a wind direction indicator located in an unobstructed area readily visible to helicopter pilots approaching the deck;
  - (2) Be fitted around the perimeter with yellow and blue lights in alternate order, not more than 3 meters (10 ft.) apart; and
  - (3) **Be marked with—**
    - (i) The unit's identification;
    - (ii) A continuous line 40 centimeters (16 in.) wide on the perimeter; and
    - (iii) Aiming circles as may be appropriate considering deck configuration, helicopter type, and operational requirements.
- (b) All markings must be in a contrasting color to the surface of the deck.

## Notes

### Authority

Authority: 43 U.S.C. 1333; 46 U.S.C. 3102, 3306; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 73-251, 43 FR 56808, Dec. 4, 1978, unless otherwise noted.